Radiative B-decay as a test of CKM unitarity

We point out that R \equiv Br(b\rightarrow d \gamma)/Br(b\rightarrow s \gamma) is a sensitive probe of possible violation of CKM unitarity. We compute R in a minimal extension of the Standard Model containing an additional isosinglet charge (-1/3) quark, which leads to a deviation from CKM unitarity...

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Detalles Bibliográficos
Autores principales: Bhattacharya, G, Branco, Gustavo Castello, Choudhury, D
Lenguaje:eng
Publicado: 1994
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(94)90562-2
http://cds.cern.ch/record/265499
Descripción
Sumario:We point out that R \equiv Br(b\rightarrow d \gamma)/Br(b\rightarrow s \gamma) is a sensitive probe of possible violation of CKM unitarity. We compute R in a minimal extension of the Standard Model containing an additional isosinglet charge (-1/3) quark, which leads to a deviation from CKM unitarity.

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